PHP fgets () function
Complete PHP Filesystem Reference Manual Definition and Usage
fgets () function returns a line from an open file.
fgets () function when it reaches the end of a specified length or read file (EOF) (whichever comes first), Stop to return to a new line.
If it fails the function returns FALSE.
grammar
fgets(file,length)
| 参数 | 描述 |
|---|---|
| file | 必需。规定要读取的文件。 |
| length | 可选。规定要读取的字节数。默认是 1024 字节。 |
Example 1
<?php
$file = fopen("test.txt","r");
echo fgets($file);
fclose($file);
?>
$file = fopen("test.txt","r");
echo fgets($file);
fclose($file);
?>
The code above will output:
Hello, this is a test file.
Example 2
Read the file line by line:
<?php
$file = fopen("test.txt","r");
while(! feof($file))
{
echo fgets($file). "<br />";
}
fclose($file);
?>
$file = fopen("test.txt","r");
while(! feof($file))
{
echo fgets($file). "<br />";
}
fclose($file);
?>
The code above will output:
Hello, this is a test file.
There are three lines here.
This is the last line.
There are three lines here.
This is the last line.
Complete PHP Filesystem Reference Manual